Die-holder



R. T. McGEE.

DlE HOLDER.

APPLICATION FILED APR. 4, I918.

UNITED STATES PA ENT OFFICE.

RICHARD-"I. McGEE, or WHEELING, WEST VIRGINIA.

DIE-HOLDER.

To all whom it may concern:

, Be it'known that I, RICHARD T. MoGnn, a citizen of the United States, residing at \Vheeling, in the county of Ohio, State of West Virginia, have invented certain new and useful Improvements in Die-Holders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to die holders and particularly to an improved structure for securing the dies in the holder.

In stamping numbers or other symbols on metal, such as stamping heat numbers on projectiles, the die holder and the means embodied therein for securing the dies in the holder are subjected to relatively roughi usage with the result that the device under such conditions can be used but a relatively short time before the securing means of the dies become impaired and the latter fall out of the holder.

It is, therefore, the purpose of my invention to provide an improved means for securing the dies in the holder in which the locking action is intensified as the use of the device progresses, such intensification of the locking action being produced by the inertia of the securing means arislng when the holder is struck a sharp blow to cause an advance movement of both the dies and holder.

I will describe my invention in the best form known to me at present but it will be understood that it is susceptible to changes in forms and proportions with the exercise of only ordinary mechanical skill and without departing from the scope of the invention as set forth in the appended claims.

In describing the invention in detail ref erence will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and inwhich Figure 1 is a view in elevation of a die holder partly in section and showing 111 invention, the die holder shown being 0 the hand type adapted to be struck a blow with a hammer for the purpose of stamping the desired material;

Fig. 2, a section on the line 2-2 of Fig. 1.

Referring to the drawings 10 1 indicates the die holder which is provided with a socket 11 for receiving a plurality of dies Specification of Letters Patent. Patented llayfll, 192() Application filed April 4, 1918. Serial N 0. 226,651.

12. The end wall 13 of the socket 12 is inclined with respect to the axis of the holder 10 and such'inclination is in the direction of the upper or blow receiving end of the holder. For the purpose of securing the dies 12 in the socket 11 I employ a locking wedge 1eL'one faceof which cooperates with the inclined wall 13 and the opposite face with the adjacent diel2. In this construction. the major end of the wedge 14 is disposed outwardly and spaced inwardly of the active faces of the dies 12. The holder 10 is provided with a passage 15 one end of which communicates with the socket 11 at a point in line with the wedge 13, said passage permitting the insertion of a suitable instrument therethrough for effecting disengagement of the wedge from its locklng position.

In the operation of the die holder previously described Ihave discovered that with each blow struck upon the upper end of the holder the wedge 14 is urged in a locking direction by its inertia and that such inertia, under the conditions specified, serves to progressivel intensify the looking action of the we ge. y such a construction I am enabled to utilize the conditions of relatively rough usage as a means for increasing the effectiveness of the die locking means.

It will be noted that by employing the wedge for the purpose of holding the dies in place, I secure a distinct advantage over structures wherein the dies are recessed for the purpose of receiving the locking element. 'When the dies are so recessed they are weakened at that point and when subjected to heavy use they will quickly break apart. The use of the wedge, of course,

eliminates any necessity for recessing the dies and eliminates the disadvantages of such recessing.

What is claimed is V 1. In a device of the class described, the combination of a die holder having a die receiving socket, a die in said socket, and

inertia intensified locking means securing the die in the socket, said inertia intensification being produced by blows struck upon the holderand advancing both and die.

2. In a device of the class described, the combination of a die holder having a die receivingrsocket, a die in said socket, and a wedge securing the die in the "socket and the holder adapted to be urged in a Wedging direction by its inertia incident to blows struck upon the holder and advancing both the holder and die.

3. In a device of the class described, the combination of a die holder having a die receiving socket one Wall of Which is inclined to the axis of the holder, a plurality of dies in the socket, and a Wedge cooperating. with the inclined Wall of the socket and the adjacent die to lock said dies 'inthe socket, said wedge being urged in a locking direction by its inertia incident to blows struck upon the holder and advancing both the holder and dies.

4. In: a. device of the class described, the

combination of a die holder having a die receiving,socket,ca die in said socket, a Wedge securing the die'in the socket and adapted to beurged in a Wedging direction by its inertia incident to blows struck upon the holder and advancing both the holder and die, and means permitting application of force against the minor end of the Wedge to effect its disengagement.

In testimony whereof? I aflix my signature,

in the presenceof two subscribing Witnesses.

v RIGHAR'DTQ M GEE. Witnesses:

G-EomnD. Loon, F. YAHRLING. 

